China's First Supercritical CO2 Geothermal Heating Project

completed

China's first geothermal heating project using supercritical carbon dioxide (CO2) technology has officially begun operations in Zhengzhou, Henan Province. The project extracts underground heat by circulating supercritical CO2 through geothermal wells approximately 2,500 meters deep, improving heat extraction efficiency by around 20% and reducing heating energy consumption by roughly 10%. It provides winter heating for over 18,000 square meters of residential housing, replacing about 288 tonnes of standard coal annually and reducing CO2 emissions by about 750 tonnes per year.